Monday, Mar. 01, 1943

Wartime Technology

Wartime news from the technical fronts:

> A mobile smoke-generator which vomits white clouds large enough to conceal whole cities has been developed by General Electric. The process is still secret. > Paper parachutes for loads up to 50 lb. are replacing expensive chutes of scarce silk and nylon. The Civil Air Patrol drops food, serum and other emergency supplies with tough, crepe-paper chutes made by Dennison Manufacturing Co. > Recent entrant in the unending race between projectiles and armor is a bullet to shoot holes in so-called bulletproof gas tanks. These tanks have rubber linings which close up holes made by ordinary bullets. The new projectile has a loose tubular jacket which sticks in the rubber lining and keeps the hole open. > Agar-agar, gelatinous medium essential for growing bacteria in the preparation of vaccines against typhoid, cholera, bubonic plague and whooping cough, was practically a Japanese monopoly before Pearl Harbor. Japs quietly got much of it from seaweed beds along the U.S. Pacific coast, taking care that no one else knew the location. The University of California has now discovered four species of California seaweed rich in agar, ending the frantic search for the secret Jap beds.

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